Mitsubishi MELSEC QCPU Programming Manual page 182

6 BASIC INSTRUCTIONS
(2) The values for
(3) The following will result if an underflow is generated by the subtraction operation:
The carry flag in this case does not go ON.
[Operation Errors]
(1) In the following cases an operation error occurs, the error flag (SM0) turns ON, and an error
code is stored at SD0.
• The ,
S1
[Program Example]
(1) The following program adds the D3 BCD data and the Z1 BCD data when X20 goes ON, and
outputs the result to Y8 to Y17.
[Ladder Mode]
(2) The following program subtracts the BCD data at D20 from the BCD data at D10 when X20
goes ON, and stores the result at R10.
[Ladder Mode]
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, , and can be between 0 to 9999 (BCD 4-digit data).
D
S1 S2
-
0 0 0 1 0
, or BCD data is outside the 0 to 9999 range. (Error code: 4100)
D
S2
0 0 3 9 9 9
[List Mode]
Steps Instruction
[List Mode]
Instruction
Steps
MELSEC-Q/QnA
8
Device
Device
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